The callback classes are no longer nested within AkCallbackManager and have a hierarchy with many inheriting from AkCallbackInfo. Wherever possible, the associations and members of these classes mimic the syntax of their C++ counterparts.

The gameObjID member of the callback classes is now of type ulong instead of IntPtr.

The class AkCallbackManager.AkMidiEventCallbackInfo is now AkMIDIEventCallbackInfo. (Please note the capitalization of "MIDI".)